Pump.



J. B. & P. L. BOULICAULT.

PUMP.

APPLICATION :FILED JUNE 12, 190e.

91 9,41 6. Patented Apr. 27, 1909.

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-JEAN B. BoULIcAULT AND PETER L. BoULicAULT, or s'r. Louis, MISSOURI.

PUMP.

Specification of Letters Patent.

Patented April 27, 1909.

Application led June 12, 1908. Serial No. 438,170.

To all whomv it may concern:

Be it known that we', JEAN B. BOULICAULT and PETER L. BOU'LICAULT, citizens of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Pum s, ofjvliich the following is a full, clear, andp exact description, reference being had to the accompanying drawings, forming a part hereof.

Our invention has `relation to improvements in pumps; and it consists in the novel details of construction more fully set forth in the specification and pointed out in the claim.

In the drawings, Figure 1 is a general perspective showing the a plication of our invention, parts being bro ren away; Fig. 2 is a combine( section and elevation of the pump cylinder; and Fig. 3 is an enlarged elevation and section of two assembled sections of the pump cylinder.

The object of our invention is to construct a pump for the pumping of waterfrom wells, cisterns, and the like, witha view of making the cylinder of the same extensible for increased depths of Well; one which will be simple in construction and contain a minimum number of parts; andone possessin advantages better apparent from a detaile description of the invention whichis as follows:-

Referring to the drawings, L represents a vwell casing or lining sunk to any available screwed or coupled to the next section, and

depth from which the water is to be pumped. Located at any convenient point near the well, 1s a' compressed air cylinder or tank C from which leads a compressed air supply pipe P, the lower end of the pipe passing into the top of the upper section 1 of a` pumpcylinder submerged in the Water of the well. The pum -cylinder may be made of any number o sections 1, 2, 3, and so forth, depending on the desired capacity of the cylinder, each section havin a terminal screwthreaded neck or ring ny which it may be so on, the last sec'tion being provided with an intake check-valve c, below which is secured a strainer section S as shown. Passin through the top of the ump-cylinder any having its lower end su merged below the surface of the water therein is the discharge or delivery-pipe P,`the end in 'the cylinder bein provi ed with any approved form of chec -valve d, to prevent the water from returning into the pump cylinder. The pipe r P continues upwardly, terminating in a discharge spout or goose-neck over a tank or basin T, where the water is to be utilized.

Should it be desired to reduce the capacity of the pump-cylinder a'result readily accomplished by removing one of the sections thereof, for example the middle section 2, itwould become necessary to correspondingly reduce the length of the pipe P with- For this purpose we provide the lower terminal of the'pipe P with a screw-threaded portion t over the outer portion of which is passed a nut 'w forced up against the top of the cylinder. When the latter is shortened, the pipe P is correspondingly withdrawn to accommodate itself to the new dimension of sucli c linder, whereu on the nut w is screwe down against t e top of the cylinder. The nut w thus serves to support the pipe P at any height above the bottom of the pump-cyllnder to which it may be desirable to set it. The pipe P is provided at a convenient point with a valve a of ordinary construction, by which the compressed air may at any time be turned into the pumpcylinder. The compressed air in the cylinder entering through the pipe P, forces tlke `contents of the pump cylinder into the basin T. The pump cylinder iills from time to time throu h the gate or check-valve c.

Having escribed our invention, what we claim is A pump com rising a source of compressed-air supp y, a pump-cylinder composed of a series of sections having screwed connections, an intake valve for the bottom section, a strainer for the pump-cylinder located below the intake, a compressed-air supply pipe leading from the source of supply to the top of the pump cylinder, a discharge pipe entering freel through the top of the pump c linder an terminating in a check-valve be ow the surface of the water, and having a screw-threaded terminal provided with a nut engaging the top Wall of the as set forth.-

In testimony whereof we aflix our signatures, in presence of two witnesses.

JEAN B. BOULICAULT. PETER L. BOULICAULT. Witnesses:

W. C. KILLEEN, l F. o. B. LE GRO.

in the cylinder thus contracted or shortened.

cylinder, whereby the length of pipe within` t e cylinder may be adjusted, substantially 

